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MSS2707A-T: 4 1/4″ Surface Mount High Security Triple Bias BMS, UL Standard 634 Level I, (Interlogix P/N 2707A)

The Model MSS707A-T High Security Surface Mount BMS is a SPDT switch with Triple Bias reeds. This magnetic contact is UL Listed to Standard 634 Level I and is part of the FlairGuard line of high security products. It comes with a magnetic and pry tamper loop which will trigger the alarm if an external magnet is used to try to defeat the switch or the switch is removed from the door. The MSS2707A-T is a low cost alternative to other high security contacts on the market and is used in government and high security commercial facilities around the world.


  • FlairGuard Biased Balanced Magnetic Switch
  • Surface Mount Switch and Magnet
  • 36” Armored Cable, #22 AWG Wire Leads
  • Magnetic Tamper and Pry Tamper
  • Aluminum Case with Urethane Potting for maximum resistance to harsh environments
  • Lifetime Warranty
  • UL Listed Standard 634, Level I
  • Specifications

    Part Number


    Circuit Configuration

    High Security Triple Bias 


    Brushed Aluminum

    Custom Options

    Call for custom options such as longer length armored cable and wire, resistors or other requirements


    Urethane potted for maximum protection of electrical components and resistance to harsh environment

    Electrical Rating

    Maximum 30 VDC, 20 ma, 3 W


    0.3″ to 0.6″

    Lead Length

    48″ #22 AWG Wire Leads, 36″ Armored Cable

    Loop Type (with magnet present)

    SPDT Door Position Switch, Normally Closed Pry Tamper


    Surface Mount, Four Screws each Switch and Magnet


    4.25″ L x 1.50″ W x 0.75″ D

    UL Rating

    UL Standard 634, Level I


    Lifetime Warranty


    6 ounces

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